A Folder with the exact name "Introduction" where you'll put Images/Gifs to introduce your opponent.

A Folder with the exact name "Scenes" where you'll put Images/Gifs of your opponent in "action".

A Folder with the exact name "End" where you'll put Images/Gifs of "action"'s end (Cumming, Squirting scenes).

You need to put at least one Image/Gif in each of these 3 folders.

With these steps your opponent will work but if you want to improve it a little more, you might want to follow these steps too :

You can set up an avatar for your opponent, by adding a File "avatar.png" (exact name, once again) to his/her folder. Make it square or it will look funny.

You can set up a silhouette for your opponent, by adding a File "silhouette.png" (exact name) to his/her folder. Make sure the background of your image is transparent.

The Gifs in "Introduction" and "End" Folders won't be synced by default, if you want them to be synced : add "[@1@]" to their filenames. You may also add "[@5@]" to your Gifs' file name to avoid some issue.

The Gifs in "Scenes" Folder are synced by default, but if the Gif features more than one "action" you can add "[@<number of actions>@]" to the name of the specific Gif Files. (Example : in the Gif "sakura.gif" she sucks the dick three times, so I'll rename the Gif as "sakura [@3@].gif"). If you doesn't want the Gif to be synced at all you can put "[@0@]" in its file name.

If you're able to edit your Gifs, you can also try to make them look better and avoid some graphical issue, with these advices :

Set the "Disposal method" for every frame to "Do not dispose".

And shift the frames who need to be on the beat on the first position.